Deca-Durabolin Nandrolone Decanoate

Deca Durabolin by Organon


Deca-Durabolin is a clear yellow oily solution for injection containing 50 mg/ml of the active ingredient nandrolone decanoate.

The active substance, nandrolone decanoate belongs to the group of medicines known as anabolic steroids that help to prevent bone loss.

Deca-Durabolin used in osteoporosis, when bones thin and become brittle, after the menopause.


Banned Deca SupplementsDo not receive Deca-Durabolin:

  • If you are pregnant or think you may be pregnant.
  • If you are allergic (hypersensitive) to nandrolone decanoate or any of the ingredients of this medicine
  • In children under the age of 3 years.
  • If you have porphyria (an inherited blood disorder)
    If you are allergic to peanuts or soy.

Take special care with Deca-Durabolin:

If you notice any signs of masculinization (for instance lowering of the voice or increase in body or facial hair), consult your doctor immediately.

Extra supervision by your doctor may be necessary in some cases; particularly the elderly. At regular intervals, blood tests done to check the oxygen-carrying substance in your red blood cells (haemoglobin). In very rare cases the number of red blood cells will increase too much leading to complications.

Medical checks also necessary in some other conditions.

  • Tell your doctor or pharmacist or nurse if you have ever had, still have or suspected to have:
    • breast cancer which has spread to the bones;
    • Kidney or lung cancer
    • heart disease
    • kidney disease
    • liver disease
    • high blood pressure
    • diabetes mellitus
    • epilepsy
    • migraine

Other medicines and Deca-Durabolin

Please tell your doctor or pharmacist or nurse if you are taking, have recently taken, or might take any other medicines-even those not prescribed.

Other medicines may affect how Deca-Durabolin works or Deca-Durabolin may affect how they work. Therefore you must tell your doctor or pharmacist or nurse if you are using, or about to use:

  • Insulin and/or other medicines to control your blood sugar levels.
  • Erythropoietin (medicine to reduce anemia);
  • Medicines to reduce the clotting of your blood (anti-coagulants)

The use of anabolic steroids like Deca-Durabolin may lead to a reduction of the doses of these medicines.

Also tell your doctor or pharmacist or nurse if you are using or about to use the hormone ACTH or corticosteroids (used to treat various conditions such as rheumatism, arthritis, allergic conditions and asthma). The use of anabolic steroids like Deca-Durabolin may increase the risk of water retention especially if your heart and liver are not working properly.

Laboratory tests:

Anabolic steroids may also affect the results of some laboratory tests (e.g. thyroid gland). Therefore, you must tell your doctor or the laboratory staff performing the tests that you are using this medicine.

Using Deca-Durabolin with food and drink

This medicine can be injected without taking consideration of meals and drinks.

  • Please tell your doctor or pharmacist or nurse if you are taking or have recently taken any other medicines, including medicines obtained without a prescription.

Pregnancy, breast-feeding and fertility

This medicine must not be taken by women who are pregnant or think that they are pregnant, or by women who are breast-feeding.

In women, treatment with Deca-Durabolin can lead to an irregular or absent menstrual cycle.

If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist or nurse for advice before taking any medicine.

Driving and using machines

As far as is known Deca-Durabolin has no influence on driving and using machines.

Important information about some of the ingredients of Deca-Durabolin

This medicine also contains:

  • Arachis oil (peanut oil) – If you are allergic to peanut or soya, you should not be given this medicine (see “Do not receive Deca-Durabolin”).
  • Benzyl alcohol (100 mg per ml solution) – Products containing benzyl alcohol must not be given to premature babies or neonates. Benzyl alcohol may cause toxic reactions and allergic reactions in infants and children up to 3 years old.

Improper use

Nandrolone is classified as a prohibited substance under the Olympic Movement Anti-doping Code (OMAC 1999). The misuse of this medicine to enhance ability in sports carries serious health risks and is to be discouraged.


This medicine should only be given by a doctor or a nurse. The injections are given deeply into a muscle (for instance in the buttock, upper leg or upper arm.)

The dose depends on your illness and how bad it is. Your doctor will decide the dose.

If you receive more Deca-Durabolin than you should:

Your doctor or nurse will inject this medicine into you. If you have the impression that the effect of this medicine is too strong then please talk to your doctor or nurse immediately.

If you forgot to get your injection of Deca-Durabolin:

Your doctor or nurse will inject this medicine into you. Should you miss a scheduled injection then please talk to your doctor or nurse as soon as possible. No double dose injected to make up for forgotten individual doses.

Effects when treatment with Deca-Durabolin stops:

The effects of this medicine do not stop immediately after discontinuation, but gradually subside. When treatment with this medicine is stopped, complaints such as those experienced before treatment may re-occur within a few weeks.

If you have any further questions on the use of this medicine, ask your doctor or pharmacist or nurse.


Like all medicines Deca-Durabolin can cause side effects, although not everybody gets them. Dependent on the dose, frequency and total period of administration of Deca-Durabolin the following undesirable effects may occur:

  • Fluid retention in the tissues, usually marked by swelling of the ankles or feet or increased blood pressure
  • An increase in male characteristics in women; your voice may get deeper and you may notice some hair growth or acne
  • Acne
  • Increased sexual desire
  • Nausea
  • Itching
  • Increased haemoglobin
  • Changes in blood lipids
  • Abnormal liver function
  • Liver anatomy changes
  • Hoarseness
  • Change of the voice
  • Increased body or facial hair
  • Enlargement of the clitoris
  • Masculinization
  • Abnormal blood tests

Deca-Durabolin may affect some liver tests or may cause liver tumours, although very rarely.

Due to the nature of Deca-Durabolin side effects cannot reversed by discontinuing medication. Injectables in general, may cause local reaction at the injection site.

  • If you get any side effects talk to your doctor or pharmacist or nurse. This includes any possible side effects not listed in this leaflet.


Keep this medicine out of the reach and sight of children.

Do not use this medicine after the expiry date stated on the carton or label after the term “exp.” (expiry date). The expiry date refers to the last day of that month.

Store below 30°C.

Do not refrigerate or freeze.

Store in the original package in order to protect from light. Do not throw away medicines via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment.


What Deca-Durabolin contains

  • The active substance is Nandrolone decanoate, 50 mg per ml fluid.
  • The other ingredients are: 100mg/ml benzyl alcohol and Arachis oil.

What Deca-Durabolin looks like and contents of the pack

Deca-Durabolin 50 mg solution for injection is a slightly yellow, oily solution filled in a 1ml clear glass ampoule and sold in packs of 1, 3 or 6 ampoules.

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